[s-cars] LS2 coil adventures part 17...

[JC]

This a repost for folks over here who might not hit the QW... interesting
and happy result for me this week:
 
Recap - I tried to run the LS2 setup for a while but had a hard misfire at
boost most of the time, especially when the car was warm, and I'd
reluctantly gone back to old OEM coilpacks. But when I went to 1+ and the
Freescale 3.0bar MAP, the old coils just couldn't take the stress and when
they'd heat up they'd start to stumble and miss like crazy at WOT high
boost. 

So... Marc suggested some time ago that maybe he was sniffin' that some cars
that fussed over LS2 coilsets could be a little underweight in the
alternator/volt-reg department. Well on Sunday I finally got a new 14.5v V-R
popped into my 120a S6 altnater and then rocked up on Monday to EFIX HQ. 

A first quick ballpark test on a 1.8T setup was 100% good, and frankly I'd
have taken that home all day, but Marc wanted to give the LS2 a try too and
in the name of science I was all for it. 

Long story short, perfect pulls everytime, none of the hard dropout misses
that I had before. Now a couple days later, car is still running like a
dream and consistently hitting full expected boost on my 1+ chipset w/ the
Freescale MAP. WOOT. 

So... for anybody struggling w/ misfires AFTER doing a big-coil upgrade,
CHECK the volt-reg and alternator. 
Easy cheap quick fix to replace BTW, even if you drop the nuts in the belly
pan in the snow and ice (as long as you have extra 8mm nuts in a pile of
junk someplace).

More thumbs up to Marc for the help and support. 100% solid!
 
---- current ----
1995.5 S6 Avant 
2003 E46 M3 Cic
2008 A3 2.0tDSG
---- past lives ----
2006 A4 2.0TQA
1998 A6Q 2.8 PES G2
1989 200TQA SJM
1990 CQ
1997 A4 1.8TQ Wett
1987 4kCSQ 
 
John J. Cunningham
 <mailto:jc at j2c3.com> jc at j2c3.com
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